diff --git a/conf/dialplan/default.xml b/conf/dialplan/default.xml
index c7d556947f..3e49eaf5af 100644
--- a/conf/dialplan/default.xml
+++ b/conf/dialplan/default.xml
@@ -231,7 +231,7 @@
 
     <!-- voicemail operator extension -->
     <extension name="operator">
-      <condition field="destination_number" expression="^operator$|^0$">
+      <condition field="destination_number" expression="^(operator|0)$">
 	<action application="set" data="transfer_ringback=$${hold_music}"/>
 	<action application="transfer" data="1000 XML features"/>
       </condition>